Leaf-turner.



No. 699,037. Pafentempr. 29', |992. J. TALBOT.

LEAF TURNER.

(Application filed Nov. 15, 1901.)

2 Sheets-Sheet L .(No Model.)

ma Nonms paens co., Pnoaumo. WASHINGTON. n. c.

No. 699,037. Patented Apr. 29, |902.

J. TALBOT.

LEAF TURNER.

` (Application filed Nov 15, 1901.) (No Model.)

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Partnr LEAF=TURNER.

SPECIFICATXON :formingpart of Letters Patent No. 699,037, dated April 29, 1902.

Application filed November l5, 1901. Serial No. 82,338. (No model.)

To @ZZ whom, t may concern.-

Be it known that I, JOHN TALBOT, a subject of the King of England, residing at Ledbury, in the county of Hereford, England, have invented certain new and useful lmprovements in or Relating to Leaf-'l`|1rners, (for which I have made application for Letters Patent in Great Britain, No. 5,159, dated March il, 1901,) of which the Vfollowing is a specification.

` Thisinvention relates toapparatusforturning over the leaves of books by means of suction, its object being to construct a device which is readily -manipulated and which while holding the paper effectively will release it readily when desired. l

The invention may be best described in connection with the accompanying drawings, which illustrate convenient forms of apparatus for turning leaves of music.

Figure 1 showsa perspective view of a mu' sic-turnerattached to a piano. Figs. 2 and 3 are details, on'alargerscale, of parts 0f the operative mechanism. Fig. 4 is an elevation of a form of music-turner with an automat` ically-adjustable leaf-holder. Fig. 5 illustrates a form of turnerfprovided with two arms to enable leaves to be turned backward or forward. Fig. .6 shows a form of turner operated by a pushing device. Fig. 7 shows a further modification, and Fig. 8 illustrates an alternative form of suction-cup.

Like letters indicate like parts in all lig-l ures.

Referring first to Figs. l, 2, and 3, an arm A, formed in two parts connected together by a hinge-joint at A', is fixed onthe upper end of a vertical shaft B, rotatably carried in a bracket C. The shaft may be kept from endwise movement by any convenient device, such as collars, preferably as shown in Fig. 2, by means of a screw-stud O, the end of which engages in a groove B in the shaft B. The bracket O may be secured to the piano in a convenient manner-say by a block C2, forming part of the music-rest. Fixed on the lower end of the shaft B is a bevel-wheel B2, which gears with a second bevel-wheel C3, revolubly carried on a pin O4, secured in or formed integral with the bracket C. Fixed on the boss or otherwise secured to the Wheel CS is a handle D, having a pin D', which engages a spring C5, arranged to hold the arm D in the position shown in the gures-that is, with the apparatus inoperative. In practice the spring is made sufficiently long to prevent the pin from riding off the end thereof during the swinging movement of the pin, which latter in practice moves through only about one-fourth of a circle. Fixed on the free end of the arm A is an expansion-chamberorsuction-cup E,whichlcallthe sucker. This may be of any suitable shape and material so as to readily compress and expand. Preferably a rubber cup, as shown in Figs. 1 to '7,is employed. An alternative form (designated as E10) is shown in Fig. S, in which plaits, formed as in an accordion, are employed. The sucker is provided with a small hole E', so regulated asto size'as to break the vacuum and release the sheet so soon as it has been lifted sufficiently to assume its required position on the other side of the book. A cord B3, to support the hinged end of the arm A, is attached at one end to the arm at a point intermediate the sucker and the elbow-joint, say B4. The other endlof the cord is attached to the music-rest or frame-block-say at B5- above thearm and slightly to one side of the shaft B-viz., that side on which the arm extends when the apparatus is in inoperative position, as shown in the figures. The action of this cord is to allow the outer portion of the arm to fall below the music-book when the larm is in the inoperative position, as shown Vsmartly pulling down the -handle D against the tension of the spring C5 the shaft B is given approximately a half-turn, swinging the arm A over and bringing the sucker with a sharp blow against the surface of the leaf to be turned, and thus expelling the air from within it. On releasing the handle the spring reverses the action, returning the arm quickly to its lirst position. The sucker clinging under atmospheric pressure tol the leaf raises the same until the leaf having been carried over far enough to fall on the opposite side the vacuum is broken by the operation of the small hole E and the sucker is released.

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Many papers are too flexible or have surfaces not adapted for the action of a sucker. In such cases a wad I5 may be gummed or otherwise attached to each leat`,formed of eelluloid, rubber, or other suitable substance. These pads will not onlyinsure the action of the sucker in adhering to the leaf, but will facilitate the turning of the same by allowing air to lie between the leaves, or the leaves themselves may be thickened and iirnied in a suitable spot for the sticker to strike.

A flap for holding the leaves in position between the turning of the same may be advantageously employed. A suitable arrangement for automatically operating such a `flap is shown in Fig. 4, in which a flap F is shown carried on the boss of a bevel-wheel F'. rlhis wheel is adapted to rotate on a pin F2, fixed on an extension C of the bracket C10, and gears with a bevel-wheel B7on the shaftB, the flap and wheels being so arranged that the former is in the position shown in full lines in Fig. Ll---that is, engaged with the leaves of the music-book-when the apparatus is in inoperative position, but swings down into the position shown in dotted lines when the shaft B is rotated.

A duplex apparatus to turn leaves in either direction at the will of the operator is shown in Fig. 5. For turning the leaf from right to leftthe arrangement is the same as that shown in Fig. l. To turn leaves inthe opposite direction, a second arm A is provided, carried on a sleeve B8, rotatably carried on the shaft B and operated in a similar manner to the first arm, the sleeve being rotated by mechanism similar to that previously describedviz., a bevel-wheel B9, gearing with a bevelwheel C7, operated by a spring-controlled handle D2.

In Fig. 6 an apparatus similar to that first described is shown; but instead of the shaft being rotated by a lever-handle and bevelwheels it is operated by a push-rack G, gearing with a cog-wheel Gf. The rack works in guides in an extension CS of the bracket C and is held in its inoperative position bythe tension of a spring G2.

Instead of the arrangement for controlling the position of hinged arms by cords, the operating-shaft B may be placed slightly out of the perpendicular, as shown in Fig. 7, the arm A2, carrying the suckers, being in this construction formed in one piece.

What I claim as my invention, and desire to secure by Letters Patent, 'isl. In a music-turner or paper-lifter, the combination of a frame, a rock-shaft supported thereon, an arm formed of two pivotally-connected parts secured at one end to the shaft and having an expanding chamber on its free end, a cord, one end of which is secured to the arm intermediateits pivotal joint and the expanding chamber and its other end being secured to the frame at a point above the arrn on the same side of the shaft as that in which the arm lies when in its inoperative position, means adapted to be actuated by the operator to rotate the arm in one direction through one-half of a revolution and automatic means to return the arm, substantially as and for the purpose specified.

2. In a music-turner or paper-lifter and in combination, a frame, a rock-shaft supported thereon, an arm formed of two pivotally-connected parts, fixed by one end to the shaft and having an expanding chamber on its free end, a cord one end of which is secured to the arm intermediate its pivotal joint and the expanding chamber while its other end is secured to the 'frame at a point above the arm on the same side of the shaft as that in which the arm lies when in its inoperative position, a bevel-wheel on the shaft gearing with a bevel-wheel supported on the frame, an operating lever or handle fixed on the boss of the latter Wheel and a spring engaging the handle to return the same to normal position after movement by the operator substantially as specified.

3. In a music-turner or paper-lifter and in combination, a frame, a rock-shaft supported thereon, an arm formed of two pivotally-connected parts, xed by one end to the shaft and having an expanding chamber on its free end, a cord one end of which is secured tothe arm intermediate its pivotal joint and the expanding chamber while its other end is secured to the frame at a point above the arm on the same side of the shaft as thatin which the arm lies when in its inoperative position, a bevel-wheel on the shaft gearing with a bevel-wheel supported on the frame, an operating lever or handle fixed on the boss of the latter wheel, a spring engaging the han- ,dle to return the same to normal position after movement by the operator and a leafflap such as F carried on a bevel-wheel gearing with a second bevel-wheel carried on the aforesaid shaft, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN TALBOT.

lVi'tnesses:

FRED Hewitt-tru, T. II. DownINe.

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